package com.yh.construct.appearance_parttern;

public class ModenPostOffice {
    private LetterProcess letterProcess = new LetterProcessImpl();
    private Police letterPolice = new Police();
    //写信，封装，投递，一体化了
    public void sendLetter(String context, String address) {
//帮你写信
        letterProcess.writeContext(context);
//写好信封
        letterProcess.fillEnvelope(address);
        //警察要检查信件了
        letterPolice.checkLetter(letterProcess);
//把信放到信封中
        letterProcess.letterInotoEnvelope();
//邮递信件

        letterProcess.sendLetter();
    }
}